### What Is Critical Speed In A Ball Mill

What is the critical rotation speed in revolutions per second for a ball mill of 12 m diameter charged with 70 mm dia balls a 05 b 10 c 276 d 066 What is the critical rotation speed in revolutions per second for a ball mill of 12 m diameter charged with 70 mm dia balls a 05 b 10 c 276 d 066 The operating speed of a ball mill should be the critical speed a less than b much more than c at least equal to d slightly more than